As Oneye died and was sucked out of the World, Yggdrasil screamed in pain. Silverwing though he understood what the Three of Life was saying, and revealed what he heard to Blueface and Stonehearth:
Humans will ignore Yggdrasil. They will betray the Winds like the Winds betrayed us, and like we betrayed our Father. They are weak and won’t be able to protect the World unless they come to peace with Nature.